CVE-2026-56401

EUVD-2026-42261
Wazuh wazuh-modulesd before 5.0.0-beta3 contains a null pointer dereference vulnerability in inventory_sync FlatBuffer DataValue handling. An enrolled agent can send a verifier-valid DataValue message omitting the optional id field, causing wazuh-modulesd to crash when dereferencing data->id()->string_view() without null validation, resulting in denial of service.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/wazuh/wazuh/commit/3adf4f87942705aa0ceeba1e145c259cc9dcd242
https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p
https://www.vulncheck.com/advisories/wazuh-null-pointer-dereference-in-inventory-sync-datavalue-flatbuffer-handling
https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p